Hello there, tl;dr obfsproxy from wheezy-backports raises exception about not finding Twisted although Twisted-core is installed. I want to install obfsproxy from wheezy-backports on a wheezy machine. The package currently in wheezy-backports [1] depends on : python (>= 2.7), python (<< 2.8), python-pkg-resources, python-crypto, python-twisted-core (>= 13.2) After installation i get: $ obfsproxy Traceback (most recent call last): File "/usr/bin/obfsproxy", line 5, in <module> from pkg_resources import load_entry_point File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2707, in <module> working_set.require(__requires__) File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 686, in require needed = self.resolve(parse_requirements(requirements)) File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 584, in resolve raise DistributionNotFound(req) pkg_resources.DistributionNotFound: Twisted obfsproxy explicitly requires twisted: $ cat /usr/lib/python2.7/dist-packages/obfsproxy-0.2.7.egg-info/requires.txt PyCrypto Twisted argparse pyptlib >= 0.0.5 pyyaml But in /usr/lib/python2.7/dist-packages/ there is only: twisted Twisted_Core-13.2.0.egg-info Meaning obfsproxy doesn't seem to find Twisted, cause there is no Twisted*.egg-info in dist-packages/ directory. Interestingly obfsproxy wheezy package from deb.torproject.org [2] depends on : python (>= 2.7), python (<< 2.8), python-pkg-resources, python-crypto, python-twisted, python-pyptlib (>= 0.0.4), python-yaml (The same goes for obfsproxy in debian testing.) Notice it's 'python-twisted' and not 'python-twisted-core'. So the package from deb.torproject ends up installing a Twisted*.egg-info in /dist-packages and obfsproxy does not complain. So i'm wondering, is this a bug? Should i file a debian bug for the debian package in wheezy-backports? Does obfsproxy need all of twisted dependencies or 'python-twisted-core' suffices? If the latter how may we fix the original exception? Cheers, Alex [1]: https://packages.debian.org/wheezy-backports/obfsproxy [2]: https://deb.torproject.org/torproject.org/dists/wheezy/main/binary-amd64/Pac...